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Finding the Fourth Proportional to 66,634.41, 91,946.61 and 42,793.38

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Solution

The fourth proportional to 66,634.41, 91,946.61 and 42,793.38 is: 59,049.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,634.41 : 91,946.61 = 42,793.38 : x
  2. Step 2: Convert to fraction form
    66,634.41/91,946.61 = 42,793.38/x
  3. Step 3: Cross multiply
    66,634.41x = 91,946.61 × 42,793.38
  4. Step 4: Simplify right side
    66,634.41x = 3,934,706,221.44
  5. Step 5: Solve for x
    x = 3,934,706,221.44/66,634.41
  6. Step 6: Final answer
    x = 59,049.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.